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Finding the Fourth Proportional to 321,969.70, 482,954.55 and 111,607.66

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Solution

The fourth proportional to 321,969.70, 482,954.55 and 111,607.66 is: 167,411.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,969.70 : 482,954.55 = 111,607.66 : x
  2. Step 2: Convert to fraction form
    321,969.70/482,954.55 = 111,607.66/x
  3. Step 3: Cross multiply
    321,969.70x = 482,954.55 × 111,607.66
  4. Step 4: Simplify right side
    321,969.70x = 53,901,427,211.85
  5. Step 5: Solve for x
    x = 53,901,427,211.85/321,969.70
  6. Step 6: Final answer
    x = 167,411.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.